3.1 ECC608-TFLXWPC Configuration Zone

The ECC608-TFLXWPC configuration is fixed and cannot be modified by the customer. When using the Microchip Trust Platform Design Suite, all configuration information is taken into account by the tools. Relevant information about how the device is configured is shown below or in the slot information.

Device Configuration Information

  • The serial number for each device is unique and stored in bytes [0:3, 8:12]. Bytes [0:1] are 0x01 0x23 and byte [8] is 0x01. All other bytes are unique.
  • The default 7-bit I2C address is 0x38. The I2C address can be overwritten using the UpdateExtra command.
    Important: The default I2C address of the ECC608-TFLXWPC differs from that of the standard ATECC608 Device.
  • The I/O levels are set to a fixed reference level; therefore, the host processor can operate at a lower voltage than the ECC608-TFLXWPC device.
  • The Watchdog Timer (WDT) is set to a maximum time-out of 1.3s.
  • The use of an I/O protection key is enabled with the key stored in Slot 6.
  • For the ECC608-TFLXWPC, the following individual slots may be uniquely configured to be slot lockable or not: Slots 3-6 and 8-15.
  • SecureBoot is enabled for FullStore digest mode for the ECC608-TFLXWPC.
  • Monotonic counters are available for use by the system and are not attached to any keys.
  • The Health Test Failure bit is cleared after any time that a command fails as a result of a health test failure. If the failure symptom is transient, the command may pass when run a second time.